2008 Dodge Grand Caravan Q&A

2008 Dodge Grand Caravan Question: code po404

changed o2 sensor got advice from other web site.po404 list egr valve.does it need cleaning or replacement -
Answer 1
You can clean it. I clean mine 1 time per year for same code. -
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it won't go above 50mph. Downhill it does fine. It shows two codes: po404 and po325. What could be wrong?